package com.sky.controller.user;

import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.view.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@Slf4j
@RestController("userDishController")
@RequestMapping("/user/dish")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    @GetMapping("/list")
    public Result<List<DishVO>> list(Long categoryId) {
        log.info("用户查询分类下的菜品，分类id：{}",categoryId);
        //查询redis中是否存在缓存
        String key = "category_" + categoryId;
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if(list!=null&&!list.isEmpty()){
            return Result.success("根据分类id查询菜品,数据来自redis",list);
        }else {
            list = dishService.listWithFlavor(categoryId);
            //将数据缓存到redis
            redisTemplate.opsForValue().set(key,list);
            return Result.success("根据分类id查询菜品，数据来自数据库",list);
        }
    }

}
